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25 iv 06 Function is what really matters  ? The relationship with alignment ?  We know that they are related –But how directly?  The rules are different –For osteotomy overcorrect 62% –For uka Undercorrect leave varus –For tka ?undercorrect? or neutral  We also know that everyone is different –So does everyone deserve a unique plan?

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25 iv 06 Summary 1  How to measure  Imperial Protocol:  CT can be rapidly acquired 40s  2D and 3D post operative analysis  Real measurements of implant position can be obtained  We are now able to fully measure the accuracy of CAOS systems well within the envelope of +/- 2mm & 2   For the same dose as a standing film